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3 years ago

6.

Chemistry

1 answer:

dezoksy [38]3 years ago

5 0

Answer:

I don't know

Explanation:

sorry i just need point to ask so i have comment

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Chris investigates the conservation of mass during a chemical reaction. He measures the mass of the reactants before the reactio

seraphim [82]

Answer:

Repeat the experiment several times to make sure the results are reliable.

Explanation:

The best way for Chris to validate his results is to repeat the experiment several times to make sure the results are reliable.

For a hypothesis to be accepted it must be testable.

The more standard data points obtained from an experiment, the more the reliability index increases.
Chris should not just conclude with one data point.
In fact, most scientist prefers to use up to 30 data points before reliability can be assumed.
So, Chris should repeat the experiment as much as possible to make sure the results are reliable.

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3 years ago

Lewis dot structure KOH

svetlana [45]

? What??????? You need help or what

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4 years ago

D. 100 mph

Andrej [43]

Answer:

The answer is c

Explanation:

200 divided by 100 is 2 and you can check that by multiplying 2 by 100.

4 0

3 years ago

If f(x)=x^2 and g(x)=2x+3, what is f(g(x))

IgorC [24]

Answer:

$\huge\boxed{f(g(x)) = 4x^2 + 12x + 9}$

Explanation:

In its raw form, function notation essentially represents an equation with only one unknown variable, expressed in terms of another. Thus, f(x) = x² + 7x can be expressed as

g(x) = 2x + 3

f(g(x)) = (2x + 3)²

f(g(x)) = 4x² + 12x + 9

Hope it helps :) and let me know if you want me to elaborate.

6 0

3 years ago

Read 2 more answers

Which of the following solutions contains the largest number of moles of dissolved particles? a.) 25 ml of sodium chloride b.) 2

kirza4 [7]

Answer:

b.) 25 ml of aluminum hydroxide

Explanation:

For this question, we have to assume that we have the same concentration for all the solutions, for example, 1 M. Additionally, we have to take into account the ionization reaction for each species:

a) $NaCl~->~Na^+~+~Cl^-$ we have to ions

b) $Al(OH)_3~->~Al^+^3~+~3OH^-$ we have fourth ions

c) $CH_3COOH~->~CH_3COO^-~+~H^+$ we have two ions

d) $C_6H_1_2O_6~->~C_6H_1_2O_6$ we have one ion

If we have the same volume and the same concentration the variables that will help us to answer the question would be the number of ions. If we have more ions we will have more particles dissolved. Therefore the answer would be b) (due to the fourth ions).

I hope it helps

5 0

3 years ago

Read 2 more answers